Conventional and laser-assisted machining of laser-borided Monel 400 alloy

Abstract

This study concentrates on comparing effects of conventional and laser-assisted machining (LAM) of laser borided Monel 400 alloy. For this purpose, the shaft made from Monel 400 was covered with 200 µm thick boron layer and surface melted using diode laser. For determining the in uence of laser beam scanning velocity on nal microstructure, microhardness and depth of melting, four laser beam scanning velocities were set: 5, 6, 8 and 10 m/min. Obtained microstructures are typical for laser melted metal and are composed of ne crystals. Microhardness increased signi cantly due to enriching Monel 400 with boron and the level of this increase depends on laser beam scanning velocity carried out for the process. During both conventional and laser-assisted turning cutting forces were measured for comparison. Other compared parameters after carrying out these processes were: obtained surface roughness and tool's life. It was found that it is possible to form laser borided surface of Monel 400 alloy by machining and using additional laser-assist has a positive impact on the e ciency of the process. The paper is the rst description of effects obtained by laser assisted machining of laser borided surface.

AISI 4340 Çeliğinin Isı Destekli Tornalanmasının Boyutsal Kararlılık ve Yüzey Pürüzlülüğüne Etkilerinin Deneysel ve İstatistiksel İncelenmesi

“…IDİ uzun yıllardır uygulanan bir yöntemdir [15]. Ön ısıtma sayesinde takım tezgâhının güç tüketimi düşer [16], kesme kuvvetleri [17] ve takım aşınması azalır [18]. Ön ısıtmanın sağladığı olumlu etki talaş kaldırma oranının (TKO) artmasını sağlar [19].…”

Investigation of Heat Annealing and Parametric Optimization for Drilling of Monel-400 Alloy

“…Advanced machining processes such as electric discharge machining (EDM) and wire EDM [8][9][10][11][12], Electrochemical machining (ECM) [13,14], and laser and plasma machining [15][16][17][18][19][20] were also used in machining Monel-400. For example, WEDM was used by Kumar et al [8].…”

Study on microstructure of 42CrMo steel by ultrasonic surface rolling process

“…There are many methods of surface strengthening of parts, including surface modification 7 and surface mechanical deformation strengthening 8 . Surface modification includes laser processing 9 and electrochemical processing 10 . Physical or chemical machining methods are used to form new structures on the surface of the part, thereby improving surface performance.…”